I will be using the TPS65988DK for a device that does not have a battery and only gets its power from USB. I can see SPI on the flash loads when powered by SYS_PWR, but when connected only to SPI it does not load. Is there something else that needs to be set on the EVK to allow dead battery mode to work?
Make sure the jumpers look like this from the EVM: https://www.ti.com/lit/pdf/slvub62
Also there is ADCIN setting that are adjustable:
The ADC setting can be found the the TPS65988DK Spec here: https://www.ti.com/lit/gpn/tps65988dk
Thanks, I was able to get the system to configure via flash by changing the ADCIN1 settings to this
Before doing so, I removed the jumpers to ensure that VBUS wasn't shorting to the DCDC converter outputs.
